Radiator attachment



July 31, 192s 1,678,670

H. H. CRAWFORD RADIATOR ATTACHMENT Original Filed July 5, 19:16

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Patented July 31, 1928.

'IUNITED STATES.-

HOWARD H. CRAWFORD, F DETROIT, MICHIGAN, ASSIGNOR '10 DETROIT MOTOR AP-1,678,670 PATENT OFFICE.

PLIQANCE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

RADIATOR ATTACHMENT.

Application filed July 3. 1916, Serial No. 107,421. Renewed April 11,1928.

The invention relates to liquid cooling sys tems for internal combustionengines, and it is the object of the invention to obtain a constructionwhich is applicable to installed radiators and will render the same moreflexible in operation.

Inthe present state of the art most cooling systems in use in connectionwith interna combustion engines are non-adjustable, a constant amount ofheat-dissipating surface It has therefore been the practice to choose anaverage size of radiator, or one which will work most r the engine isrun.

efficiently at average temperatures at which This results ininefiiciency during extremes in temperature, there being but littleradiating surface for warm weather and too'much for cold weather. It ispossible to cut down on the cooling in cold weather by placing a shieldor other obstruction in front of the radiator, but usually there is noway in which the cooling effect may be increased.

To overcome this defect, I have devised an attachment to radiatorswhichoperates, first. to increase the cooling when necessary, and secondly,to decrease the cooling gradually to any degree desired.

In the drawings:

Figure 1 is a front elevation of a radiator to which my improvement isapplied;

Figure 2 is a vertical longitud nal section therethrough.

A and B are the top and bottom headers of a radiator of any suitableconstruction, and C is thecore or radiating surface arranged betweensaid headers. As specifically shown, this core comprises a series ofwater tubes D extending between the upper and lower headers, andtransversely-extending fins E surrounding said tubes.

To-increase the capacity of this radiator, l have provided asupplementalframe F of larger dimensions than that of the radiator,

" and which is adapted to be used in connection with a replacement hoodfor enclosing the engine. The frame F extends outwar beyond the frontface of the radiator and is provided with an opening therein which is oflarger dimensions than the opening in which the radiator core isarranged. G is a supplemental water header arranged within the upperportion of the frame F, havin a portion 6* overlapping the front of thewhich are connected with suitable operating mechanism, such as K, bywhich they may be simultaneously adjusted to more or less obstruct theopen area within the frame F. The operating mechanism may be actuatedeither manually or by automatic means controlled by a thermostat, suchconstruction not being shown as it forms no'part of the presentinvention.

With thev construction as thus far described, the additional radiatingsurface provided by the supplemental headers G and H and tubes I willincrease the cooling effect of the radiator so as to be sufiicient lllcapacity for the maximum temperatures under which the engine isoperated. Furthermore, the increased open area in the frame F over thatin the main radiator will act as a concentrator for increasing theamount of air passing through the radiator ume of air passing throughthe radiator, and

if necessary to completely close the open area. Thus any temperaturedesired may bereadily obtained, and where automatic controlling means isprovided a constant temperature may be maintained under all conditions.

The headers G and H may be suitably connected with the headers of themainradiator so as to permit circulation of water from one to the other,this, as shown, being accomplished by soldering said supplementalheaders to the main headers around apertures L forming connectingpassages. The top header may be fitted around the radiator filler tubeM, and is preferabl provided with an extension filler tube having alateral opening P, communicating with the auxiliary header, and its endtelescopically engaging the filler tube M.

The construction as described constitutes an auxiliary unit, which assuch is attachable to installed radiators, and will erform the doublefunction of increasing e cooling effect where necessary and. of variabldecreasing the cooling to any point desire What I claim as my inventionis 1. An attachable unit for a radiator, comprising an auxiliary waterheader ada ted to overlap the main header of the radiator and embracingthe radiator filler tube and an auxiliary filler tube on said auxiliaryhegder in alignment with said main filler tu e.

2. In heat radiating means for the water cooling system of an automobileengine the combinatlon' of an inlet header and inlet pipe connectiontherefor communicatingwith said header at a substantial distance belowthe top thereof, a discharge header spaced from said inlet header, heatra'diating water passages of relatively small cross section directlconnecting said inlet and discharge hea ers, an upper chamber above andin communication with said inlet and discharge headers, the said upperchamber communicating with said discharge header entirely independentlyof said radiating wa-.

ter passages, a discharge connectiongscommunicating with said dischargeheader at a' point adjacent the bottom of said heat radiating means, anda filler tube extending upwardly from said upper chamber.

In testimony whereof I aflix mysignature.

HOWARD H. CRAWFORD.

